Improvement in tonguing and grooving planes



G. G. MILLER.

Tonguing and Grooving Plane. N0.I65,355.

Patented July 6,1875.

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N. PETERS. PHDIOAUTHOGRAPH t NITED STATES PATENT OFFICE.

CHARLES Gr. MILLER, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE STANLEY RULE AND LEVEL COMPANY, OF SAME PLACE.

IMPROVEMENT |N ToNGuiNe AND cRoovlNe PLANES.

Specification forming part of Letters Patent No. 165,355, dated July 6, 1875; application filed April 9, 1875.

To all whom it may concern: l

Be it known that I, CHARLES G. MILLER, of New Britain, in the county of Hartford and State of Connecticut, have invented an Improvement in Ton guin g and Grooving Planes,

of which the following is a description and specification, reference being had to the accompanying drawings, wherei Figure l is a side view of a plane embody-l ing my invention, the view showing that side ofthe tool upon which the shiftin g guide, hereinafter described, is hung. The tool is adjusted as a tonguing-plane. The View fromA this 4 side is, however, precisely the ,same when the matched stuff,7 and combines in itselfI both a tonguing and a grooving tool.

The invention consists in a shifting guide, which can be adjusted so `as to leave both the knives or chisels uncovered, making a tonguing-plane of the tool, or it can be adjusted to coverone of the chisels or knives, making a grooving-plane.

The letter c denotes the metallic stock or body of the tool; b, the handle, and c the throat, down which runs what carpenters call the iron 7 d, forked at its lower end into the two chiselsd1 d2, which do the cutting. e denotes the wedge which holds the iron in place. The letter f denotes the shifting guide, eccentrically attached to the shaft fr', hung and rotating in the socket g, attached to the stock a. The pin il runs into the top of the shaft or trunnion it', and forms, practically, a part thereof. The spring m, bearing between the shoulders g t2, presses the guide j' constantly upward. In either adjustment, for tonguing or for grooving, the guide f is held to position by the pins n, (shownin dotted lines,) which project downward from the fingers 0, which project sidewise from the stock a, three teats entering corresponding holes in the top of the guide j'.

When the operator desires to shift the adjustment of the guide f, he presses downward upon the top of the pin-z'1 till the guide clears the pins n, when it can be readily rotated upon its pivot in the socket g from one adjustment to the other.

In place of the vertical movement allowed, by this construction and arrangement, to the guide f, I contemplate depriving1 the guide of this vertical play, and in place thereof Vmake one of the pins n, or both of them, a springcatch.

When lthe guide f is adjusted as shown in CHARLES Gr. MILLER.

Witnesses:

FEED. N. STANLEY, T. A. OONKLIN. 

